feat: Add database setup guide and local configuration files

- Added DATABASE_SETUP.md with comprehensive guide for PostgreSQL and Redis installation on Windows
- Created .claude/settings.local.json with permission settings for pytest and database fix scripts
- Updated .gitignore to exclude .env.backup file
- Included database connection test utilities in lyra/database_setup.py
- Added environment variable configuration examples for local development

lyra/knowledge/gutenberg_crawler.py

@@ -9,7 +9,7 @@ import asyncio
 import aiohttp
 import aiofiles
 import logging
-from typing import Dict, List, Optional, AsyncGenerator, Tuple
+from typing import Dict, List, Optional, AsyncGenerator, Tuple, Any
 from dataclasses import dataclass
 from datetime import datetime, timedelta
 import re